Saw-setting machine.



No. 693,970. Patented ifob. 25, I962.

J. HOUF.

SAW SETIINGMAGHINE.

(Application filed Mar. 11, 1899. Renewed Jan. 20, 1902.)

(No Modal.) 2 Sheets-Sheet I.

n "new: wsygns $0., PncTo-umq, WASHlNGYO- u.

No. 693,970. Patentei Feb. 25, I902.

J. HOUF.

SAW SETTING MACHINES m-cm filed Mar. 11', 1899. mimwm an. 20, 1902.

2 Shuts-Sheet 2,

(No Model.)

owl j n m UNITED STATES PATENT OFFICE.

JOHN Hour,- on. sonnjnnornntnnw YORK.

SAW-SETTING MACHINE.

SPECIFICATION forming part of Letters Patent no. 693,970, dated February 25, 1902 Application filed'March 11, 1899. Renewed January 20, 1902. Serial No. 9(l,q=6 5. (No models) the United States, residing at Schenectady,

in the county of Schenectady and State of New York, have invented new and useful Irn-- provements in Saw-Setting Machines, of which the following is a specification. Y

My invention relates to machines for set-.

ting teeth of saws'of the kind known as bandsaws, and it consists of the novel combinations of novel parts and devices hereinafter described, and set forth in the claims.

The objects of my invention are toprovide in a saw-setting machine certain combinat ons of devices and parts whereby certain operating devices in the machine may at will,

be adjusted so that saws having blades of differentwidths and of different thicknesses and having teeth of differing degrees or sizes as to fineness and coarseness may'have their their teeth in pairs having opposite inclines a view of the same.

rapidly set in true lines of similar inclinations andthe blade be automatically moved the distance of two teeth at each movement for carrying a pair of adjoining teeth to opposite and between a pair of oppositely-inclined faces of anvils and a pair of set-hammers preparatory to their receiving their set'in opposite directions of inclines.

Other objects and advantages of the inven ting machine embodying theiimprovements in my invention.

Fig; 2 is a horizontal section taken at line 1 in Fig. 3. Fig. 3is a side Fig. at is aview of the same from its front side, and. Fig. 5 is a view from its rear side.

Similar letters of reference refer to similar parts throughout the several views.

In the drawings, Ais a suitable frame made, preferably, with a standard form comprising limbs a a, integral with base A, which is perforated at suitable points for receiving bolts orscrews for securing it to a suitable table.

g B B] are saw-clamping blocks secured on the upper ends of limbs a a of the frame by "suitable bolts or screws A A vOne of these blocks, as B, Figs. 1, 3, and 4, is stationary,

while the other, as B, is movable andadjustable outwardly from block B or inwardly toward said block, as may be suitable for increasing orlessening the width of the saw-receiving groove 17 between said -blocks for, i

adapting said groove to nicely receive the blade of the saw and allow it to be mowed endwise and yet hold it from having lateral play between said blocks. The adjustable block B has its screw-receiving holes I), Fig. 1,-

made slightly oblong, as shown by'dotted lines in Fig. 1, the-screwbeingremoved.-' B B are adjusting screws passing freely through perforations provided in the upper ends of brackets B B and screwing in said block B, while check-nuts 12 working on said screws at near its fin ger-turnin g head b,

may be set against'the outer sides of brackets B B for preventing adjustable block 13 moving inward toward the stationary block B. Reacting springs B B -arranged between the adjustable block B andbrackets B B operate to crowd said'adjustable block toward the stationary block, so that'the sawblade between said two blocks will be elas- .tically clamped and allowed to be moved lengthwise between said blocks. I

' ,G O are anvils,which are securely fixed on blocks B B or made integral with them and have-their face sides 0 c inclined outwardly from'the sides of the blocks forming the f groove 1), between which the teeth of thesaws Y are to move. These anvils G O are located staggering in relation to each other,with their near corners adjacent and their face sides having like angles of inclination in opposite y,

directions. a p v g D is an adj ustable'gage-bar arranged inthe groove'b and extending. through} the entire length of said groove and outwardlyin opp0- site directions past the-on terends of the sawclamping blocks for service as an extended support to a saw from its back" when seated This adjustable gage-bar Dhas its thereon. outer ends connectedwith suitable gage-supports D D, which are loosely mounted on the outer ends of adjusting-screws D -D which may freely revolve in the'perforations provided for them in said supports while they work through screw-threaded perforations in brackets D D connected with the limbs of said frame A. A mash-nut d on each screw IOO operates to hold them fixed when set, and a finger-pin (1 serves as a convenient means for revolving said screws, by means of which the gage-bar may be raised or lowered in the groove between blocks B B" to such a depth as may be found to be suitable for holding the blade of the saw with the base-line of the teeth of the sameon a line with the plane of the base of the anvils or top surface of the blocks, and

may be given to two adjoining teeth at the same time, when suitable other. mechanism also provided will operate to carry those sethammers back from the set teeth preparatory to striking another pair of adjoining teeth. These hammers are adj ust-able both in a horizontal and vertical direction and set in situation adjusted to, in relation to the inclined.

faces of said anvils, for adapting said hammers for operating with teeth of different sizes, as may be found in difierent saws.

F F, Figs. 1, 2, 3, 4, and 5, are levers, on the upper ends of which the set-hammers E E are mounted and are adjustably secured by means of pivot f, integral with each said levers, and pivot-hole a through the head of each hammer, and set-screw E, screwing through a screw-threaded perforation in the head and against the pivot f. These levers F F, which may be made with any suitable form, cross each other at about the middle of their length and are pivoted on each other by ,WHpi1ot F, which is supported from the limbs a a of the frame. The lower ends of these pivoted cross-levers are each provided with an inwardly-projected toe f, and the upper arm of each lever is provided with eye f located at a point about midway between the pivot F and the head of the set-hammer E the lever carries. ends of the pivoted cross-levers F F are projected inwardly toward each other, as shown in Fig. 4:, and one of said toes has its forward end made with incline-f which is preferably of convex form, running from the lower edge of the toe up to the top linef of the same, while the other toe has its forward 'end made with incline f preferably of convex form and running from its upper side down to the lower straight line f, as shown in Fig. 4.

G G are cross-bars secured in the eyes f of each lever. G G are coiled springs which are each connected by their opposite ends with said cross-bars G G and preferably by means of devices by which the tension of the The toes f f on the lower said springs may be increased or lessened at will for increasing the force of the blow of the hammers or lessening the same, as the stiffness of the teeth of the saws may require. One end of each of these springs is secured to the outer end of one of these cross-bars Gby being hooked on the same, while the opposite ends are respectively secured to the outer ends of the opposite cross-bar by means of adjusting screws g, passing through said cross-bar at each end and screwing in headpieces 9, securedto an end of each saidspring and having on each a mash or set nut 9 When these adjusting-screws are turned in proper direction, the tension of these springs will be increased, and be lessened whenturn ed in an opposite direction. 4

H H are dual wipers mounted on revolving shaft H, which shaft is supported in suitable bearings provided in the frame A and .is ar-. ranged midway between said toes ff of the crossed levers and in direction transverse to the direction of movement of same- These dual wipers are preferably integral and are .shown to have their faces h h made on curves of a true circle, with their respective points h h of termination of throw on line with the center of rotation of the shaft on which said wipers are mounted, which shaft H is relatively eccentricto the curved faces 71. h of the former, as shown in Fig. 4.. When the toes f f of each leverF are in contact Withthe point of least throw of said wipers, the lower and upper ends of said levers are at the full limit of their throw toward each other, and

when said wipers are revolved in proper direction by said shaft H the faces of said wipers are progressivelymoved in contact. with said toes f, so as to gradually spread both their upper and lower ends apart until the greatest throw of said wipers, as at points h h, has been reached, when toesff ofsaid leverswill run on? from the curved facesh of said wipers and said levers under the impulse of springs G G he suddenly operated with such a sufficient force as may be given them under their previous adjustment and throw both set-hammers E E againstthe two I teeth opposite the respective anvils G C and suitable power, as may be preferred. The. drawings, Fig; 8, show both a band-wheellH and handle'll by either of which said shaft may be revolved.

I is'a pawl pivoted by an adj ust-able pivot 2' on lever J.. This adjustable pivot is se cured to said lever by means of clamping-bolt t", (indicated by dotted lines in Fig. 1-, secured in place in the downwardly and inwardly in clined slot-form perforationj in the upper end of said lever, clamping-collar t and clamping-nut 2. (Shown in said Fig. 1 in connection with Fig. 3.) Lever J is pivoted.

to bracket J, supported from the frame A, and has its lower end made with any proengagement with the teeth it pushed against by its spring.

ferred form of tee j, through which cam L,

mounted on shaft H, on which the dual wipers H H are mounted and in relation to which the said cam is timed'in its movement of throw, may impart motion to said lever for throwing the upper end of lever J and the pawl I, carried bythe latter, forward while in pawl I will cease and spring it, between pivotpin J of said lever and the toe end of the same,operates suddenlyto move said lever so as to carry the saw-moving pa'wl'back from to the distance of the next two teeth back for engagement with the saw at such pointpreparatory to being moved forward after the set-hammers have delivered their next blows against the toes f f of levers F F, so that both the crossed levers may be acted on by their operating-springs only an instant be fore the said pawl-carrying lever is acted on M is an adjusting-screw located between the lower arm of lever J and a screw-receiving piece m, connected with the frame, which piece is perforated and screw-threaded to receive the screw-threaded stem of said adj usting-screw, which is provided with a suitable finger-wheel m and the gaging-head m Fig. When this adjusting-screw is revolved in onedirection, its gaging-head m will be carried outwardly for gaging the distance of back throw of the pawll, carried bylever J When said screw is set in to its whole distanceallowed, then the length ofvthrow of pawl I will be greatest, and when set out it will be lessened. By means of thisadjustingscrew and the adjustable pivot 2' in the slotform pivot-hole j and pawl I'on said pivotthe throw of the said pawl can be nicely adjusted for operating with the teeth of fineor coarse toothed saws for movin g such saws the length of two teeth at eachforward movement of-said lever Jr This machine may be made with any'pre ferred size for operating with band-saws varying in width of blade from one-half to one inch, or from one inch to three inches, orfr'om. two inches to five or more inches in width, as may be found in use in lumber-manufacturing mills, and may be operated by steam, wa-

ter, or electric power or by hand, as may be preferred;

Having described my invention, what I claim, and desire to secure by Letters Patent,

tion with a suitable frame, saw-clamping blocks B B, anvils O G provided with similar inclined facesc and arranged staggering on said blocks, of crossed levers F- F pivoted together at points midway between their op'posite ends and provided at their lower ends with toes f f of form describedand projectedinwardly toward each other, set-hammers E E 1. In a saw-setting machine, the combina adapted to be vertically adjusted and fixedly secured on the upper ends of said levers, dual wipers H H of form described mounted on a revolving shaft which is arranged transverse tothe lines of movement of the lower arms of said levers, and the adjustable contractin s rin 's G G connectin the-u er.

arms of said levers and operating to simultaneously carry said set-hammers with sudden, blows against the saw-teeth opposite said'anvils, substantially as and for the purposes set forth.

2. In a saw-setting machine, the combination with saw-clamping blocks B B having a saw-receiving groove between, anvils C C hav ing like inclined faces 0 and located staggering in relation to each other on said blocks and with their adjoining corners at said groove, crossed levers F'F pivoted together at about their middle of length and having at,

their lower ends toes f f described, and set hammers E E adjustably secured on the up per ends of said crossed levers and having,

ends 6 of inclination of face corresponding with the inclines of the faces of said anvils, of revolving dual wipers H H of form described and revolving in contact with the toes of said levers, cross-bars G G which are respectively transversely connected to the upper end por-fl tions of said'levers, adjustable contracting springs G G connecting said cross-bars and adj ustingscrew mechanism described connecting an end of each of said springswith an end of each of saidcross-bars, substantially as and for the purposesset forth.

3. In a saw-setting machine, the combination with a suitable frame, stationary clamp-f I e ing-block B, adjustable clamping-block B,

adapted to be moved horizontally'toward and from said stationary clamping-block and an-Z vils OC described, integral with said blocks and relatively staggering and having like in; .clinations of faces a, of brackets B B supported from said frame, springs 13 B between IIO said adjustable block and the said brackets,

adjusting-screwsB B and check-nuts b b for operation, substantially as and for than i purposes set forth.

4. In a saw-setting machine, the combina- I tion with the crossed levers F F, pivot-pin F and sethammers E E carried by the upper Y ends of said levers and adapted to be adjusted atwill horizontally or vertically, of revolving dual cams H H operating with the lower ends of said levers, of cross-bars G G carried by the upper arms of said levers, percussionsprings G G between said cross-bars, and mechanism for increasing or lessening, at will the tension of said springs, substantially as and for the purposes set forth.

5. In a saw-setting machine, the combination with a suitable frame, stationary clamping-block B, adjustable clamping-b1ock B and the vertically-adjustable gage-bar D between rhe said clamping-blocks and forming a support for a saw, from its back edge, and having itsend portions extended outwardly past the respective ends of said clampingblocks, and suitablysupported, of lever J having with its lower end the toej and its upper end the inclined slot j, adjustable pivot i adapted to be variously located in the said slotted upper end of the lever, pawl I loosely working on said pivot with its free end riding on the outer end portion of one of said clamping-blocks and vertically over the said vertically adjustable gage bar, revolving caln L having an inclined side face revolvin g in contact with the toe of the lever J and the reacting spring 715 between the pivot of said lever and the rearward side of the lower arm of the same substantially as and for the purposes set forth.

6. In a saw-setting machine, the combinaset forth.

JOHN I-IOUF. Witnesses:

ALEX. SELKIRK, CHARLES SELKIRK. 

